Machine Improve

Commutator Process

The process of rectifying the alternating current into direct current.

Tesla

The unit of flux density in MKS.

Gauss

The unit of flux density in CGS.

Air gap

The space between the armature core and pole face.

Armature core

It is where the armature conductors are embedded.

Magnetic Frame

It acts as mechanical support to the poles and end pieces which carry the bearings.

Armature winding

The winding where the voltage is induced.

Magnetic reluctance

The property of the material that resist the establishment of magnetic flux.

Slip ring

It provides electrical connections between the rotating coil and the stationary external circuit.

October 21, 1831

The date of when Faraday’s was drawn in the diary of Michael Faraday.

Rotor

It is a rotating machine which functions by producing a relative motion between electrical conductors and magnetic field.

Brush

It collects the current from commutator.

Pole shoes

It spreads out the flux induced in the pole core.

Commutator, Field winding, Armature Winding, Brushes

What are the essential parts of a DC machine that comprise its electrical circuit?

Yoke, Pole and Pole shoes, Armature core, Air Gap

What are the essential parts of a DC machine that comprise its magnetic circuit?

Yoke, Pole and pole shoe, Armature core, Air Gap, Commutator, Field winding, Armature winding, Brush

What are the 8 constructional parts of a DC machine?

Stator

rotates in magnetic field

Weber

The unit of flux in MKS.

Gilbert per Maxwell

The unit of reluctance in CGS.

Amp turns per weber

The unit of reluctance in MKS

Lines per inch-amp-turn

The unit of reluctance in English

R

The symbol of reluctance

Gilbert

The unit of Field force in CGS

Amp-turn

The unit of Field force in MKS and English

Generator

A rotating machine that converts mechanical energy into electrical energy.

Motor

A rotating machine that converts electrical energy into mechanical energy.